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This may be a weird one, and may be completely OT. If the latter:
Feel free to tell me to bugger off :)
System is FreeBSD 8.2, running ipfilter and
Occasionally I see something like this from ipfilter in
bge1 @0:24 b <my_outside_ip>,25 -> 220.127.116.11,36545 PR tcp len
20 40 -AR OUT
Looking in /var/log/maillog...
Dec 11 17:47:08 myhost postfix/smtpd: connect from
Dec 11 17:47:10 myhost postfix/smtpd: NOQUEUE: reject:
RCPT from unknown[18.104.22.168]: 450 4.7.1 Client host
rejected: cannot find your reverse hostname, [22.214.171.124];
Dec 11 17:47:11 myhost postfix/smtpd: lost connection
after DATA from unknown[126.96.36.199]
Dec 11 17:47:11 myhost postfix/smtpd: disconnect from
This particular one occurred seven times in a row, in quick
I've searched on this *fairly* seriously and come up with nothing.
Anybody got any idea what this is?
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